Means for forming sectional printers&#39; rolls.



PATENTED Nov. 1, 1904.

J. J. RAFTER. MEANS FOR FORMING SEGTIONAL PRINTERS ROLLS.

APPLICATION FILED JAN. 23, 1903. RENEWBD MARA. l2. 1904.

N0 MODEL.

No. 773,590. i

Patented November 1, 1904.

PATENT ETTcE.,

JOSEPH J. RAFTER, OF HARTFORD, CONNECTICUT.

MEANS FOR FORNIlNG SECTIONAL PRINTERS ROLLS.

SPECIFICATION forming part of Letters Patent No. 773,590, dated November1, 1904. application Eleni January 23, 1903. Renewed March l2, 1904.Serial IIe. 197,888. (No model.)

To @ZZ whom, it party concern:

Be it known that I, JOSEPH J. RAFTER, a citizen of the United States,residing in Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements in Meansfor Forming Sectional Printers Rolls, of which the following is aspecification.

This invention relates to printers rolls, and has for its object toprovide means for forming or molding' a number of. rolls upon a core.

In the use of printers rolls it has been found desirable, especially inmulticolor-work, to employ a plurality of rolls each presenting an inl(receiving and distributing surface upon a single spindle, and at timesit has also been found desirable to employ a short roll or a roll otherthan the full length upon the spindle of a commercial length.

In the drawings accompanying and forming part of this specification,Figure 1 is a side view, partly in central section, showing a form of myinvention wherein the rolls are formed upon a spindle. Fig. 2 is a topview thereof on the line 2 2 of Fig. 1. Fig. 3 is a view similar toFig'. 1, but showing a plurality of rolls upon a sleeve or hollow core.Fig. t shows a form of roll-spacer. Fig. 5 isa perspective of anair-chamber. Fig. 6 is a perspective of a spindle. Fig'. 7 is aperspective view, partly broken away, of a combined strainer, funnel,and centerer; and Fig. 84 is side view of a form of device for holding'the spacer and for locking the rolls together, a portion broken away toshow the location of the parts.

The mold, which may be specially constructed or may beV any convenientform of mold, is shown as supported by a base or foot 9, having a hub 10thereon, which hub is effective to enter and support a mold 11, andwhich hub is provided with a central opening or cavity 12, in which thecore (designated in a general way by on which the rolls are tobe cast isreceived, whereby the lower part of the core may be centered andsupported. In Fig. 1 the core is shown as a spindle 13, having reducedjournals 14. The upper part of the spindle may be spaced in the mold byany suitable device. In the present instance, however, a funnel 15 isshown,which has a fiaring mouth 16 and a nozzle 17 adapted to closelyfit the interior of the mold, and which is also provided with aconcentric opening 18, adapted to embrace the spindle and accuratelycenter the same within the mold. The opening 18 is shown as embracingthe journal 14,

whereby the utmost accuracy of centering will l The lower part of themold is provided with an air-chamber 20, in the present instanceproduced by means of ablock 21, having an opening 22, the walls of whichare adapted to closely it'the core and having the air-space produced by.chambering out the lower part of the block and providing suitablechannels 23 to communicate therewith, having. at their upper endsreduced openings 24. Upon the entry of the composition into the mold thesmall quantity of air which remains at the bottom will be forced downinto the airchamber and will there remain, the 4Skinning overof the rollat the end holding it captive and preventing its passage through thebody of the roll.

For the purpose of dividing the rolls so that a number thereof may becast upon the same core a spacer (designated in a general Way by 7 5)may be applied to the mold wherever it is desired that the rolls shallbe spaced apart. The spacer may comprise a pair of blocks 25 25, whichmay, if desired, be hinged together by a suitable pivot 26, which maybea screw, if desired, to prevent loosening, and 'the' core may beprovided with pins' 27, mating with openings .28 in the blocks, in thepresent instance made in the abutting edges thereof, whereby the blocksmay be mounted upon the spindle and the wholeinserted into the mold.Suitable communication is provided from one mold to the other bypassages, in the present instance an annular channel between the innerwalls of the blocks and the core. In Fig. l the mold 11 is shown ascomprising two sections held together by means of a sleeve 29,positioned upon the lowermost section by an abutment or collar 30. Inthis instance two rolls of unequal length are shown as having' been castupon the spindle. In Fig. 3 four rolls, three of equal length andequally spaced and one shorter than the others and more widely spaced,are shown as cast or formed upon the core 50, in this present insta-ncecomprising' a sleeve or tube 31, which is ccntered in the mold by meansof a pin 32 entering the openingl 18 in the eenteringdevice and passingdown the sleeve, a pin 33 at the other end passing through the block 21,whereby the sleeve is centered in the mold. If desired, however, it isreadily apparent that other portions of the core may be embraced by thecentering device than those which are shown. In this instance the moldis one continuous piece.

When it is desired to cast rolls upon an existing spindle and space therolls apart at a given point, it will merely be necessary to drill asmall hole through the spindle and drive a proper pin therethrough. Whensleeves are employed for cores instead of spindles, as mentioned above,such sleeves may be provided with pins running entirely through them ormerely through the walls of the sleeve, according as the sleeve is to bemounted upon a spindle traversing the same or to be hung upon some otherform of journal, The pins or projections may, if desired, be placed uponthe block and the cavity therefor be made on the spindle-Aas, forinstance, by turning' a groove on the spindle. If, however, it isdesired to practice the invention and leave the spindle or other core inits original condition, the blocks 25 may be made slightly larger thanthe inside of the mold Il and may be provided with chamfered inner edges34 and square abutting outer edges 35, whereby the blocks may beinterposed between the mold-sections and be embraced by the inner wallsof the sleeve 29, whereby the mold will be divided up and the rollspaced upon the core as in the other instances.

For the purpose of locking the mold-sections together the sleeve 29 maybe provided with bayonet-slots 36 and the sections provided with pins37, whereby the mold-sections may be locked together, and if theorganization is such as is employed in F ig. 8 the sections, blocks, andsleeve will all be locked together in solid form and the expansion andshrinkage incident to casting will not permit the molds to move upon therolls.

Having thus described my invention, I claim and desire to secure byLetters Patent# 1. In means for producing a number of plastic rolls upona core, the combination with a mold, of a roll-spacer, and means forpositioning the spacer upon a core.

2. As a means to produce a number of plastic rolls upon a core, asectional block having hinged connections for the sections thereof, andpositioning pin-sockets at the abutments of the sections.

3. As a means to produce a number of plastic rolls upon a core, asectional block having hinged connections for the sections thereof, andpositioning pin-sockets in the block.

4. As a means to produce a number of plastic rolls upon a core, asectional block having means for connecting' the sections thereof, andmeans to locate the same upon a core.

5. The combination with a mold of hollow, cylindrical formation, of aseparable annular block having a working tit with the interior of themold, and means for positioning the block relatively to a core withinthe mold.

6. The combination with. means for supporting acore, of a block adaptedto surround the core, and a sleeve surrounding the block and capable ofmaintaining it in position.

7. T he combination with a mold for casting printers rolls, of means forpositioning` the core comprising a funnel provided with a nozzle havinga portion adapted to embrace the core anda portion adapted to beembraced by the walls of the mold.

S. In a mold for casting printers rolls, the combination with a mold, ofmeans for centering one end of a core, means for centering the other endof the core and comprising a funnel having a nozzle capable of fittingthe space between the core and mold, and a series of strainer-holesthrough such portion, as and for the purposes specified.

9. The combination with a sectional mold, of a sectional spacer-block, asleeve surrounding and having a working lit with the mold-sectionswhereby the mold-sections and spacerblock are locked.

10. The combination with a sectional mold, of a sectional spacer-block,and a sleeve surrounding the same, for interlocking the parts.

l1. In means for casting a plurality of printers7 rolls upon a core thecombination with a sectional mold, of a base therefor; a hub upon thebase having a working fit with one end of a mold-section; acore-centering opening in the hub and concentric thereto; a funnelprovided with a nozzle adapted to enter one end of a section and centerthe core in relation thereto; a sectional block adapted to encroach uponthe mold-space from its perimeter inward to separate the perimeter ofthe molded roll into predetermined lengths of separated IOO perimeters;and means to detachably hold together the mold sections and thesectional block.

12. In means for castinga plurality of printers rolls upon a core thecombination With a mold, oi' a funnel provided with a nozzle having aface adapted to embrace the core and a face adapted to be embraced bythe inner Walls of the mold to enter one end of the mold and center thecore in relation thereto and traversed lengthwise by foraminations tostrain the material to be molded and control the flow thereof; and meansto encroach upon the mold- Space from its perimeter inward to separatethe perimeter of the molded roll into predetermined lengths of separatedperimeters.

13. ln means for producing a number of rolls upon a core. thecombination of a mold, and means to encroach upon a mold space aroundthe entire perimeter for a portion of its length from suoli perimeterinwardly.

14. In means for producing' a number of rolls upon a core, thecombination of a mold, means to encroach upon the mold-space around the15. The combination With a mold, of means for supporting the mold, meansto center the core within the mold, and means to circumferentiallydivide the perimeter of the molded roll into predetermined lengths ofseparated pcrimeters.

16. In means for Casting a plurality oi' printers rolls upon a core, thecombination with a mold, of a mold-spacer to Separate the perimeter ofthe molded roll into predetermined lengths of separated perimeters, andmeans to position the same upon a core.

17. The combination with a core, of a mold; a roll-spacer to cooperatewith the mold; and pins carried by the spacer or the core to entercavities in the other to position the spacer and locate the rolls.

JOS. J. RAFTER. Witnesses:

W. J. GARRITY, HENRY BIssETT.

